Advisoriesby IbisMicrosoftCVE-2026-50480
Microsoft Windows: heap buffer overflow
Fix: upgrade to 10.0.14393.9339 or later (3 fixed versions below)
Heap-based buffer overflow in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Windows 10 Version 1607 Product | >= 10.0.14393.0, < 10.0.14393.9339 | 10.0.14393.9339 |
| Windows Server 2012 Product | >= 6.2.9200.0, < 6.2.9200.26226 | 6.2.9200.26226 |
| Windows Server 2012 (Server Core installation) Product | >= 6.2.9200.0, < 6.2.9200.26226 | 6.2.9200.26226 |
| Windows Server 2012 R2 Product | >= 6.3.9600.0, < 6.3.9600.23291 | 6.3.9600.23291 |
| Windows Server 2012 R2 (Server Core installation) Product | >= 6.3.9600.0, < 6.3.9600.23291 | 6.3.9600.23291 |
| Windows Server 2016 Product | >= 10.0.14393.0, < 10.0.14393.9339 | 10.0.14393.9339 |
| Windows Server 2016 (Server Core installation) Product | >= 10.0.14393.0, < 10.0.14393.9339 | 10.0.14393.9339 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-122